scholarly journals Bank-Line Behaviour of the Main Rivers Located Within Sundarbans Using Digital Shoreline Analysis System

2021 ◽  
Vol 9 ◽  
pp. 11-21
Author(s):  
Md. Manjurul Anam ◽  
Abdullah-Al-Jabir ◽  
G. M. Jahid Hasan
Keyword(s):  
Mangrove Forest ◽  
Satellite Images ◽  
Rate Of Change ◽  
Coastal Communities ◽  
Eastern Region ◽  
Temporal Behaviour ◽  
Digital Shoreline Analysis System ◽  
Analysis System ◽  
Line Positions ◽  
Line Movement

Sundarbans, the largest mangrove forest located over the GBM basin, has impacted lives of millions over the years. Standing against various natural disasters, rivers of Sundarbans have undergone major issues such as erosion-accretion of both the banks. The paper deals with a combination of remote sensing and Digital Shoreline Analysis System (DSAS), studying temporal behaviour of bank-lines along the main rivers of Sundarbans for the last three decades. The course of main rivers spanning from southwest Baleswar to west Bengal Bidyadhari within coverage of 10,000 sq. km. has been analyzed in this study. DSAS, the extension tool of ArcGIS, was used for monitoring the rate-of-change from multiple historic bank-line positions extracted from satellite images. Comparison of historic bank-lines between different rivers of Sundarbans was done based on Net Bank-line Movement (NBM) with an interval of five years. Finally, the results were presented graphically to get a better understanding of the bank-line behaviour. The study revealed that the western region of mangrove prevails eroding behaviour than the eastern region. Increased rates of riverward movement due to accretion was found from 2008-2013. These results are important for future monitoring and proper management within the coastal communities surrounding the mangrove forest.

scholarly journals Assessing the Rate of Shoreline Changes of Rameswaram Island, Tamilnadu, India, using MATLAB Component Runtime Utility & Digital Shoreline Analysis System

2020 ◽  
Vol 9 (3) ◽  
pp. 3318-3321
Keyword(s):  
High Water ◽  
Field Investigation ◽  
Rate Of Change ◽  
Physical Parameters ◽  
Geospatial Technology ◽  
Water Line ◽  
Digital Shoreline Analysis System ◽  
Long Term Changes ◽  
Analysis System

The Present study highlights the changes in the coastal tract of Rameswaram island located between the geometric location, latitude 9° 10' to 9° 20' N and the longitude 79° 12' to 79° 30' E. Using Geospatial Technology, Long-term changes have noticed from digitized shorelines taken from Landsat imageries and SOI toposheet for the years 1968, 1978, 1988, 1999, 2009 and 2018. Digital Shoreline Analysis System (DSAS) an extension provided by USGS for ArcGIS used to cast transects perpendicular from the baseline, towards the shorelines. High water Line (HTL) has taken as shoreline in this study. The distance between the shorelines has taken from the cast transects plotted from the baseline. For the rate of change calculation, MATLAB component runtime utility for ArcGIS has used. Based on the Linear Regression Rate (LRR) the shore has classified into High Erosion, Low Erosion, Stable and Low Accretion, High Accretion zones. The island has a shoreline length of 78.4 km, and the studies found that 27.83 km (35.41%) of shoreline is accreting nature, 37.90 km (48.21%) of shoreline is stable, and 12.86 km (16.36 %) of shoreline tends to erode. During the field investigation identified that High amount of erosion occurred in the locations near Pamban, Tharavaithopu and Dhanushkodi. Also, Accretion identified over the locations Ayyanthopu, Natarajapuram and Arichumanai tip. Wind action is one of the physical parameters that induced the erosion in some location of this study area.

Perubahan Garis Pantai Menggunakan Citra Satelit Landsat di Pesisir Kecamatan Sayung, Kabupaten Demak

2021 ◽  
Vol 10 (2) ◽  
pp. 299-305
Author(s):  
Yualita Prasida Ramadhani ◽  
Ibnu Praktikto ◽  
Chrisna Adhi Suryono
Keyword(s):  
Remote Sensing ◽  
Average Rate ◽  
Rate Of Change ◽  
Northern Coast ◽  
Shoreline Changes ◽  
Coastline Change ◽  
Sensing Technology ◽  
Digital Shoreline Analysis System ◽  
Analysis System

Wilayah pesisir Kabupaten Demak yang terletak di bagian utara Pantai Jawa merupakan yang rentan terhadap perubahan garis pantai. Perubahan yang serius ini perlu dilakukan pemantauan terus menurus. Penelitian ini dilakukan untuk memperoleh informasi tentang perubahan garis pantai yang disebabkan oleh tingkat abrasi dan akresi yang terjadi di Kecamatan Sayung, Kabupaten Demak pada tahun 2013-2020. Metode penelitian ini dengan menggunakan metode deskriptif studi kasus dengan menggunakan teknologi penginderaan jauh. Metode penginderaan jauh yang digunakan untuk mengetahui perubahan garis pantai adalah dengan metode overlay (tumpang susun) garis pantai pada tahun yang berbeda dan Digital Shoreline Analysis System (DSAS). Hasil penelitian menunjukkan garis pantai Kecamatan Sayung dengan panjang pantai 20.953,59 m, telah mengalami abrasi pantai seluas 141,49 ha dan akresi sebesar 36,61 ha. Sehingga persentase tingkat abrasi sebesar 82% dan akresi sebesar 18%. Secara keseluruhan, rata-rata laju abrasi yang terjadi dalam kurun waktu periode 2013-2020 adalah sebesar 13,08 meter/tahun dan laju akresi sebesar 8,22 meter/tahun. Perubahan garis pantai yang terjadi dari tahun 2013 hingga tahun 2020 lebih banyak mengalami abrasi jika dibandingkan dengan akresi. The coastal area of Demak Regency, which is located on the northern coast of Java, is  vulnerable to shoreline changes. This serious change is necessary for ongoing monitoring. This research was conducted to obtain information about coastline change in coastal Sayung District of Demak Regency in 2013 until 2020. This research method is done by using descriptive method of case study by using remote sensing technology. The remote sensing method used to determine shoreline changes is overlay method and Digital Shoreline Analysis System (DSAS) in different years. Based on the research results can be seen the rate of change of coastline length of 20.953,59 m, shoreline changes that occur in the form of abrasion of 141,49 ha and changes in the form of accretion of 36,61 ha. So that the proportion of the abrasion rate is 82% and the accretion is 18%.Overall, the average rate of abrasion that occurred in the 2013-2020 period was 13.08 meters / year and the accretion rate was 8.22 meters / year. Coastlines that occur from 2013 to 2020 more experienced abrasion process when compared to the accretion process.

scholarly journals ANALISIS SPASIAL PERUBAHAN GARIS PANTAI DI PESISIR KABUPATEN SUBANG, JAWA BARAT

2012 ◽  
Vol 8 (3) ◽  
pp. 75 ◽  
Author(s):  
Ankiq Taofiqurohman ◽  
Mochamad Furqon Azis Ismail
Keyword(s):  
Satellite Images ◽  
Field Survey ◽  
Shoreline Change ◽  
Landsat Tm ◽  
Residential Construction ◽  
Shoreline Changes ◽  
Digital Shoreline Analysis System ◽  
Analysis System ◽  
Images Processing ◽  
System Program

Pengamatan mengenai perubahan garis pantai di pesisir Kabupaten Subang, Jawa Barat telah dilakukan dengan menggunakan program Digital Shoreline Analysis System berdasarkan citra satelit Landsat TM dari tahun 1996–2010. Tujuan dari penelitian ini adalah untuk mengetahui besar perubahan garis pantai di Kabupaten Subang serta zonasi kawasan yang mengalami perubahan garis pantai tersebut. Metode yang digunakan adalah pemprosesan citra dan survey lapangan. Hasil dari penelitian ini menunjukkan bahwa dari tahun 1996–2010 perairan pesisir Kabupaten Subang mengalami perubahan garis pantai oleh adanya akresi dan abrasi yang maksimalnya sejauh lebih dari 1 km. Hasil analisis regresi antara perubahan waktu dengan akresi serta abrasi memberikan nilai positif. Secara keseluruhan, lebih dari 50% panjang pesisir Kabupaten Subang dikategorikan dalam kerusakan yang parah. Perubahan garis pantai di Pesisir Kabupaten Subang terjadi terutama karena kegiatan pembangunan di sekitar pesisir seperti pembukaan lahan mangrove menjadi tambak dan sawah, pembangunan pemukiman, serta transpor sedimen dari sungai-sungai di kawasan pesisir Kabupaten Subang. Kata kunci: perubahan garis pantai, Kabupaten Subang, citra satelit, akresi, abrasi.   Observation of coastal shoreline changes in the Subang District was conducted using Digital Shoreline Analysis System Program based on the satellite images of Landsat TM from 1996 to 2010. The purpose of this study was to determine the distance of shoreline change and the zoning area in the Coastal of Subang District. Methods used in this study were images processing and field survey. The results of the study indicated the presence of shoreline changes which experienced maximum accretion and abrasion of more than 1 km between 1996 to 2010. The results of regression analysis between time and accretion as well as time and abrasion showed positive correlation. More than 50% the coastal area of Kabupaten Subang was in severely damaged con­dition. Coastal shoreline change in Kabupaten Subang occurred mainly due to the developmental activities such as residential construction, coastal mangrove conversion to ponds and rice paddies and sediment transport from the river around Kabupaten Subang. Keywords: shoreline change, Subang District, satellite images, accretion, abrasion.

scholarly journals Dinamika perubahan garis pantai Kabupaten Kendal tahun 2000-2020

2021 ◽  
Vol 35 (1) ◽  
pp. 75
Author(s):  
Bernadetta Indri Dwi Astuti ◽  
Agung Laksono ◽  
Dzakwan Taufiq Nur Muhammad ◽  
Intan Fatin Nurbaiti ◽  
Noverita Nur Hanifah ◽  
...  
Keyword(s):  
Linear Regression ◽  
Shoreline Change ◽  
Rate Of Change ◽  
Regression Rate ◽  
End Point ◽  
Digital Shoreline Analysis System ◽  
Landsat 7 ◽  
Analysis System ◽  
End Point Rate ◽  
The Impact

Abstrak Pemantauan garis pantai akibat adanya proses akresi dan abrasi merupakan salah satu upaya untuk menjaga batas wilayah wilayah di Kabupaten Kendal. Lima multitemporal citra Landsat 7 ETM+ dalam periode tahun 20 tahun (2000-2020) digunakan untuk menganalisis perubahan garis pantai di Kabupaten Kendal.Tujuan dari penelitian ini adalah untuk menganalisis perubahan garis pantai dan menganalisis dampak serta upaya mitigasi dalam menangani perubahan garis pantai di Kabupaten Kendal. Digital Shoreline Analysis System (DSAS) digunakan untuk menganalisis perubahan garis pantai dengan metode Net Shoreline Movement (NSM), End Point Rate (EPR), dan Linear Regression Rate-of-Change (LRR). Hasil penelitian menunjukkan bahwa nilai tertinggi dari Linear Regression Rate-of-Change (LRR) selama periode 20 tahun adalah sebesar 50,9 m/tahun sedangkan nilai terendah sebesar -35,81 meter/tahun. Nilai rata-rata EPR dan NSM selama periode 20 tahun adalah sebesar -0,07 m/tahun dan -1,14 meter. Berdasarkan studi ini, dampak dari perubahan garis pantai yang disebabkan abrasi dan akresi adalah adanya peningkatan dan penurunan luas wilayah. Bentuk mitigasi perubahan garis pantai di Kabupaten Kendal yakni dengan pembangunan breakwater dan penanaman hutan mangrove. Abstract Monitoring shoreline change due to accretion and abrasion processes is one of the efforts to protect the maritime boundary of Kendal Regency. Five multi-temporal Landsat 7 ETM + images spanning 20 years (2000-2020) is used in the tudy for the analysis of shoreline change in Kendal Regency. This study aims to investigate the shoreline change, analyze the impact, and propose mitigation of shoreline change in Kendal Regency as well. Digital Shoreline Analysis System (DSAS) is utilized for the analysis of the shoreline change through Net Shoreline Movement (NSM), End Point Rate (EPR), and Linear Regression Rate-of-Change (LRR). The result shows that the highest value of the Linear Regression Rate (LRR) for 20 years is 50.09 m/year and the lowest value of LRR is -35.81 m/year. The average EPR and NSM are -0.07 m/years and -1.14 m. From this study, it can be observed that the impact of shoreline change induced by accretion and abrasion are the addition and subtraction of the predetermined area. The impacts can be mitigated by building breakwaters and planting mangroves.

scholarly journals STUDI KERAPATAN MANGROVE DAN PERUBAHAN GARIS PANTAI TAHUN 1989-2018 DI PESISIR PROVINSI JAMBI

2020 ◽  
Vol 10 (2) ◽  
pp. 138-152
Author(s):  
Eva Achmad ◽  
Nursanti Nursanti ◽  
Marwoto ◽  
Fazriyas Fazriyas ◽  
Dwi Putri Jayanti
Keyword(s):  
Mangrove Forest ◽  
Satellite Images ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Low Density ◽  
Shoreline Changes ◽  
Average Change ◽  
Coastal Province ◽  
Analysis System ◽  
Landsat Satellite

The density of mangrove cover is one of the factors that influence changes in shoreline both accretion and abrasion. This study aims to determine the effect of changes in density of mangrove cover on shoreline changes in 1989-2018 in the Coastal Province of Jambi. The method used is the interpretation of Landsat satellite images in 1989, 2000 and 2018 using NDVI (Normalized Difference Vegetation Index) and overlaying images to see shoreline changes and DSAS (Digital Shoreline Analysis System) to calculate the area of change. The results showed that there had been a change in shoreline both accretion and abrasion in several locations that had different mangrove densities in the period 1989-2018. The results showed that accretion occured in 6 locations with an average change of Kota Sebrang 771 m, Tungkal Ilir 240.65 m, Kuala Betara 153.73 m, Mendahara 167.78 m, Kuala Jambi 169.35 m and Nipah 57.3 m, while abrasion occurs at 2 locations with an average change in Sabak Timur -41.8 m and Sadu -36.55 m. Where in the 6 locations that had accretion, mangrove density dominantly was in a close-densed and moderate state and only a few are in a low-densed condition. Meanwhile, the 2 locations that had abrasion were in a moderate state and have a low density mangrove forest.

APLIKASI CITRA LANDSAT DALAM ANALISA PERUBAHAN GARIS PANTAI (Studi Kasus di Pesisir Sayung, Kabupaten Demak, Jawa Tengah)

2019 ◽  
Vol 3 ◽  
pp. 919
Author(s):  
Khairul Umami ◽  
Syawaludin A. Harahap ◽  
Mega Laksmini Syamsudin ◽  
Sunarto Sunarto
Keyword(s):  
End Point ◽  
Digital Shoreline Analysis System ◽  
Landsat 7 ◽  
Analysis System ◽  
End Point Rate

Pantai merupakan daerah yang sangat dinamis untuk berubah seiring bertambahnya waktu. Salah satu perubahan yang terjadi di daerah pantai yaitu perubahan pada garis pantai. Tujuan penelitian ini yaitu untuk mengetahui tingkat perubahan garis pantai di pesisir Kecamatan Sayung, Kabupaten Demak dari hasil overlay citra satelit Landsat. Penelitian ini diharapkan dapat berguna sebagai rujukan penelitian selanjutnya, serta sebagai informasi untuk instansi-instansi terkait dan pemerintah agar dapat memperhatikan kondisi keseimbangan fisik pantai di Pesisir Sayung. Penelitian ini menggunakan data yang bersumber dari citra Landsat 7 dan 8 dalam kurun waktu 10 tahun dari tahun 2006 sampai 2016. Metode yang digunakan yaitu metode deskriptif dengan menjelaskan masalah yang terjadi pada lokasi penelitian dengan pendekatan pemodelan dan sistematis. Metode analisis perubahan garis pantai dilakukan dalam program Digital Shoreline Analysis System (DSAS) dengan pendekatan statistik End Point Rate (EPR) dan Net Shorline Movement (NSM). Hasil penelitian menunjukkan bahwa perubahan garis pantai di pesisir Sayung didominasi dengan kejadian abrasi yang sangat tinggi dengan luasan abrasi bernilai 116,48 hektar. Abrasi maksimum terjadi di Desa Timbulsloko, Abrasi minimum terjadi di Desa Sriwulan, Akresi maksimum terjadi di Desa Sriwulan, dan Akresi minimum terjadi di Desa Bedono.

Shoreline Change Detection and Forecast along the Yancheng Coast Using a Digital Shoreline Analysis System

Wetlands ◽  
2021 ◽  
Vol 41 (4) ◽  
Author(s):  
Dandan Yan ◽  
Xiuying Yao ◽  
Jingtai Li ◽  
Liping Qi ◽  
Zhaoqing Luan
Keyword(s):  
Change Detection ◽  
Shoreline Change ◽  
Digital Shoreline Analysis System ◽  
Analysis System

Rapid detection of changes in the riverbanks of Laigiang river of the South Central Coast Vietnam: A methodology based on Digital Shoreline Analysis System and Sentinel-2

2021 ◽  
Vol 14 (11) ◽  
pp. 13-24
Author(s):  
Anh Tu Ngo ◽  
Stéphane Grivel ◽  
Thai Le Phan ◽  
Huu Xuan Nguyen ◽  
Trong Doi Nguyen
Keyword(s):  
Linear Regression ◽  
Shoreline Change ◽  
The South ◽  
Central Coast ◽  
Shoreline Changes ◽  
South Central ◽  
Digital Shoreline Analysis System ◽  
Analysis System ◽  
End Point Rate ◽  
Sentinel 2

The research focuses on using Sentinel-2 that can be integrated with the Digital Shoreline Analysis System (DSAS) as an effective tool for the determination of changes in the riverbanks and using linear regression to predict shoreline changes. The research applied the assessment of shoreline changes in the period of 2015- 2020 and forecast to 2025 in Laigiang river of the South Central Coast region of Vietnam. Based on the DSAS tool, parameters such as Shoreline Change Envelope (SCE), Net Shoreline Movement (NSM), End Point Rate (EPR) and Linear Regression Rate (LRR) were determined. The analysis results show that the accretion process in the Laigiang river in the period of 2015-2020 with the accretion area ranges from 81.47 ha. Meanwhile, the area of shoreline erosion only fluctuates around 54.42 ha. The rhythm of evolution is a determinant element for this transitional system.

scholarly journals Deteksi Perubahan Garis Pantai di Pesisir Kabupaten Karawang dengan Aplikasi Digital Shoreline Analysis System (DSAS)

2020 ◽  
Vol 2019 (1) ◽  
Author(s):  
Akhmad Rifai Setiabudi ◽  
Thonas Indra Maryanto
Keyword(s):  
Statistical Method ◽  
Community Life ◽  
Total Length ◽  
End Point ◽  
Coastline Change ◽  
It Impacts ◽  
Digital Shoreline Analysis System ◽  
Analysis System ◽  
End Point Rate

ABSTRAKPerubahan garis pantai di wilayah pesisir Kabupaten Karawang hampir mencapai 50% dari panjang garis pantai yang ada saat ini. Perubahan dalam bentuk abrasi dan akresi ini berdampak pada penurunan kualitas hidup masyarakat yang bermukim di sekitar wilayah tersebut. Penelitian ini bertujuan mengetahui jarak dan laju perubahan garis pantai, serta perubahan maksimum abrasi dan akresinya. Perhitungan perubahan garis pantai menggunakan aplikasi Digital Shoreline Analysis System (DSAS) dengan metode statistik Net Shoreline Movement (NSM) dan End Point Rate (EPR). Abrasi terparah terjadi pada segmen 5 di Kecamatan Tirtajaya dan akresi terparah terjadi pada segmen 16 di Kecamatan Cilamaya Wetan. Rata – rata abrasi dari tahun 1990-2018 di pesisir Kabupaten Karawang mencapai 101,28 m dengan laju 3,64 m/tahun. Sedangkan, untuk akresi mencapai 195,63 m dengan laju 7,04 m/tahun. Perbedaan waktu pengamatan dalam analisis perubahan garis pantai dalam penelitian ini dengan penelitian sebelumnya, memberikan hasil berkesesuaian dengan penelitian sejenis sebelumnya, untuk wilayah yang sama.Kata Kunci: garis pantai, DSAS, Kabupaten Karawang, abrasi, akresiABSTRACTCoastline of Karawang Regency changes almost 50% from total length of the coastline. The change is process of abrasion and accretion and it impacts quality of community life in the area. This tudy aims to calculate coastline change in term length of distance and its speed. The calculation uses Digital Shoreline Analysis System (DSAS) with statistical method of Net Shoreline Movement (NSM) and End Point Rate (EPR). Maximum abrasion occurs in segment 5 of Tirtajaya District and maximum accretion occurs in segment 16 of Cilamaya Wetan District. Averaged coastline changes from years of 1990-2018 showed that abrasion has length of 101,28 m and the speed is 3,64 m/year. Meanwhile, accretion has length of 195,63 m and the speed is 7,04 m/year. This research observes the coastline change in different years with other earlier studies, and the results showed agreement with similar studies in the same area.Keywords: coastline, DSAS, Karawang Regency, abrasion, accretion 

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